Iowa LTC Providers: Medicaid Case Mix Roster Distribution Information

Mary Madison, RN, RAC-CT, CDP
Clinical Consultant – Briggs Healthcare

On January 7, 2021, the Iowa Department of Human Services (DHS) and the Iowa Medicaid Enterprise (IME) announced that effective December 29, 2020, the IME is using the Iowa Medicaid Portal Access (IMPA) for distribution of quarterly case mix rosters for nursing facilities.  This announcement is via INFORMATIONAL LETTER NO. 2204-MC-FFS.

Each nursing facility will need to ensure that a user is registered in IMPA to have access to the preliminary and final quarterly case mix rosters.

To register for a new account the user will need to select New Account in the upper left corner of the IMPA main page. Please click and follow directions in the User Registration Guide for detailed registration information.

If a user has an existing IMPA account or once the user has registered for a new IMPA account, they will need to request security access to retrieve the facility case mix roster for their facility. To obtain security access from IMPA the user will need to send an email to  The email must include the requestor’s IMPA user name and email address. Please include “Nursing Facility Case Mix Roster” in the email subject line. Once access is secured, users will be assigned the case mix role “Case Mix Rosters” in IMPA.

The second quarter preliminary roster is currently available in IMPA. The second quarter final roster will be available in IMPA on January 15, 2021. Nursing Facilities will only be able to access their case mix roster through IMPA. The IME will no longer be mailing out paper copies of the case mix rosters to the facilities. Training on the use of IMPA and retrieving case mix rosters is available on the IMPA home page at

Additional information including important dates, Iowa case mix Frequently Asked Questions (FAQ), and the Resource Utilization Group (RUG) III calculation guide will also be available to users on the case mix home page in IMPA. If you have any questions, please contact the IME Quality Improvement Organization Unit at 1-800-383-1173 or email at